1// Copyright 2020 The Bazel Authors. All rights reserved. 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15package cmdline_test 16 17import ( 18 "bytes" 19 "testing" 20 21 "github.com/bazelbuild/rules_go/go/tools/bazel_testing" 22) 23 24func TestMain(m *testing.M) { 25 bazel_testing.TestMain(m, bazel_testing.Args{ 26 Main: ` 27-- BUILD.bazel -- 28load("@io_bazel_rules_go//go:def.bzl", "go_binary") 29 30go_binary( 31 name = "maybe_pure", 32 srcs = [ 33 "not_pure.go", 34 "pure.go", 35 ], 36) 37 38-- not_pure.go -- 39// +build cgo 40 41package main 42 43import "fmt" 44 45func main() { 46 fmt.Println("not pure") 47} 48 49-- pure.go -- 50// +build !cgo 51 52package main 53 54import "fmt" 55 56func main() { 57 fmt.Println("pure") 58} 59`, 60 }) 61} 62 63// TestPure checks that the --@io_bazel_rules_go//go/config:pure flag controls 64// whether a target is built in pure mode. It doesn't actually require cgo, 65// since that doesn't work within go_bazel_test on Windows. 66func TestPure(t *testing.T) { 67 out, err := bazel_testing.BazelOutput("run", "//:maybe_pure") 68 if err != nil { 69 t.Fatalf("running //:maybe_pure without flag: %v", err) 70 } 71 got := string(bytes.TrimSpace(out)) 72 if want := "not pure"; got != want { 73 t.Fatalf("got %q; want %q", got, want) 74 } 75 76 out, err = bazel_testing.BazelOutput("run", "--@io_bazel_rules_go//go/config:pure", "//:maybe_pure") 77 if err != nil { 78 t.Fatalf("running //:maybe_pure with flag: %v", err) 79 } 80 got = string(bytes.TrimSpace(out)) 81 if want := "pure"; got != want { 82 t.Fatalf("got %q; want %q", got, want) 83 } 84} 85